📄 Description (English)
RGui 3.5.0 contains a local buffer overflow vulnerability in the GUI preferences dialog that allows attackers to bypass DEP protections through structured exception handling exploitation. Attackers can craft malicious input in the Language for menus and messages field to trigger a stack-based buffer overflow, execute a ROP chain for VirtualAlloc allocation, and achieve arbitrary code execution.
🤖 AI Executive Summary
CVE-2018-25258 is a critical local buffer overflow vulnerability in RGui 3.5.0 that allows attackers to bypass DEP protections and achieve arbitrary code execution through malicious input in the GUI preferences dialog. The vulnerability exploits structured exception handling to execute ROP chains, posing significant risk to systems running vulnerable versions. With no available patch, immediate mitigation measures are essential for affected Saudi organizations.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 24, 2026 09:17
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability primarily impacts Saudi organizations using RGui 3.5.0 in research, statistical analysis, and data processing environments. Government research institutions, universities, and healthcare organizations conducting statistical analysis are at highest risk. Banking sector risk is moderate if RGui is used in analytical departments. Energy sector (ARAMCO) and telecommunications (STC) face lower direct risk unless RGui is deployed in critical analytical infrastructure. The local nature of the exploit limits remote attack vectors but poses significant insider threat risk.
🏢 Affected Saudi Sectors
Government Research Institutions
Healthcare
Universities and Education
Banking (analytical departments)
Energy (ARAMCO - if used in analytics)
Telecommunications (STC - if used in analytics)
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
7.2
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Inventory all systems running RGui 3.5.0 across the organization
2. Restrict access to RGui GUI preferences dialog through group policies and user access controls
3. Disable RGui on non-essential systems until patching is available
4. Implement application whitelisting to prevent unauthorized RGui execution
Compensating Controls:
1. Deploy DEP/ASLR enforcement at OS level (Windows: Enable DEP for all programs, enable ASLR)
2. Restrict user privileges - run RGui with minimal necessary permissions
3. Monitor process execution for suspicious ROP chain indicators using EDR solutions
4. Implement input validation at application wrapper level if possible
5. Isolate RGui systems on network segments with restricted lateral movement
Detection Rules:
1. Monitor for RGui.exe crashes with structured exception handling exploitation patterns
2. Alert on RGui process spawning child processes (cmd.exe, powershell.exe)
3. Track VirtualAlloc API calls from RGui process
4. Monitor registry modifications from RGui preferences dialog
5. Log all RGui GUI preference changes with input content validation
Long-term:
1. Upgrade to RGui version > 3.5.0 when available
2. Consider alternative statistical analysis tools if upgrade timeline is uncertain
3. Implement code review for any custom RGui extensions
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. حصر جميع الأنظمة التي تقوم بتشغيل RGui 3.5.0 عبر المنظمة
2. تقييد الوصول إلى حوار تفضيلات RGui من خلال سياسات المجموعة وعناصر التحكم في الوصول للمستخدمين
3. تعطيل RGui على الأنظمة غير الأساسية حتى يتوفر التصحيح
4. تطبيق القائمة البيضاء للتطبيقات لمنع تنفيذ RGui غير المصرح به
الضوابط التعويضية:
1. نشر إنفاذ DEP/ASLR على مستوى نظام التشغيل (Windows: تفعيل DEP لجميع البرامج، تفعيل ASLR)
2. تقييد امتيازات المستخدم - تشغيل RGui بأقل صلاحيات ضرورية
3. مراقبة تنفيذ العملية للكشف عن مؤشرات استغلال سلسلة ROP المريبة باستخدام حلول EDR
4. تطبيق التحقق من صحة الإدخال على مستوى غلاف التطبيق إن أمكن
5. عزل أنظمة RGui على أجزاء الشبكة مع حركة جانبية مقيدة
قواعد الكشف:
1. مراقبة أعطال RGui.exe مع أنماط استغلال معالجة الاستثناءات المنظمة
2. تنبيه عند توليد عملية RGui لعمليات فرعية (cmd.exe, powershell.exe)
3. تتبع استدعاءات VirtualAlloc API من عملية RGui
4. مراقبة تعديلات السجل من حوار تفضيلات RGui
5. تسجيل جميع تغييرات تفضيلات RGui مع التحقق من صحة محتوى الإدخال
المدى الطويل:
1. الترقية إلى إصدار RGui > 3.5.0 عند توفره
2. النظر في أدوات تحليل إحصائية بديلة إذا كان الجدول الزمني للترقية غير مؤكد
3. تطبيق مراجعة الكود لأي امتدادات RGui مخصصة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.5.1.1 - Information security policies and procedures
A.8.1.1 - User access management
A.12.2.1 - Change management procedures
A.12.6.1 - Management of technical vulnerabilities
🔵 SAMA CSF
ID.RA-1 - Asset management and vulnerability identification
PR.AC-1 - Access control and user management
PR.PT-1 - Security awareness and training
DE.CM-8 - Vulnerability scans
🟡 ISO 27001:2022
A.12.6.1 - Management of technical vulnerabilities
A.14.2.1 - Secure development policy
A.5.1.1 - Information security policies
A.8.1.4 - Access rights review
🔗 References & Sources 4
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https://cran.r-project.org/bin/windows/base/old/3.5.0/R-3.5.0-win.exe
disclosure@vulncheck.com
https://www.exploit-db.com/exploits/46107
disclosure@vulncheck.com
https://www.r-project.org/
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/rgui-local-buffer-overflow-seh-dep-bypass
disclosure@vulncheck.com